#55AE57
Closest named color: Dark Pastel Green (#56AE57). oklch(67.5% 0.15 144.1), rgb(85, 174, 87).
Aa
Black text reads best on this color (7.57:1).
About this color
#55AE57 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.150 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Pastel Green (#56AE57), ΔE 0.001 away. Black text reads best on it, at 7.57:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Dark Pastel Green (#56AE57) |
| Black text | 7.57:1 |
| White text | 2.77:1 |
Values
| HEX | #55AE57 |
| RGB | rgb(85, 174, 87) |
| HSL | hsl(121, 35%, 51%) |
| OKLCH | oklch(67.5% 0.15 144.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #55AE57 | 2.77:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #55AE57 | 7.57:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #55AE57 text on white | 2.77:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #55AE57 text on black | 7.57:1 | AAA | Lc -48.6 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#DFEFDF
oklch(93.6% 0.027 145.4)
-
Step 200
200
#C5E3C4
oklch(88.6% 0.053 144.3)
-
Step 300
300
#9CD19A
oklch(80.9% 0.094 143.8)
-
Step 400
400 (this color)
#55AE57
oklch(67.5% 0.15 144.1)
-
Step 500
500
#1FA52E
oklch(63.1% 0.192 144.1)
-
Step 600
600
#008C1C
oklch(55.6% 0.179 144.1)
-
Step 700
700
#007616
oklch(49.1% 0.159 144.1)
-
Step 800
800
#006110
oklch(42.8% 0.138 144.1)
-
Step 900
900
#00510C
oklch(37.8% 0.122 144.2)
-
Step 950
950
#063009
oklch(27.1% 0.079 144.1)
#55AE57 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #B1A050 | 0.113 |
| Deuteranopia (no green cones) | #A5985D | 0.112 |
| Tritanopia (no blue cones) | #48AA9A | 0.094 |
| Achromatopsia (no color) | #9B9B9B | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55AE57
#55AE57
oklch(67.5% 0.15 144.1)
- #C374CA
#C374CA
oklch(67.5% 0.149 324.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #55AE57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.001
- Fern #63A950 ΔE 0.016
- Algae #54AC68 ΔE 0.023
- Mid Green #50A747 ΔE 0.024
- Boring Green #63B365 ΔE 0.025
- Medium Green #39AD48 ΔE 0.028
- Jade Green #2BAF6A ΔE 0.029
- Seaweed Green #35AD6B ΔE 0.030
Use #55AE57 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.